Stairway

The stairway has 20 steps. Each step is 22 cm long and 15 cm high. Calculate the length of the handrail of staircases if the top and bottom exceed 10 cm.

Correct answer:

z =  520 cm

Step-by-step explanation:

x=20 cm y=15 cm n=20  a=n x2+y2=20 202+152=500 cm z=2 10+a=2 10+500=520 cm



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